Type-metal agitator



G. L. FORT.

TYPE METAL AGITATOR.

APPUcAnoN FILED Nov,z,1919.

Patented Deo. 28, v1920.

INVENTOR M650 e L. .P0/",

A TTORNY UNITED STATES PATENT OFFICE.

GEORGE LESLIE FORT, OF DES MOINES, IOWA, ASSIGNOR TO FORT-IFIED IVIAIFUFAC-` TURING COMPANY, OF KANSAS CITY, MISSOURI, A. CORPORATION OF MISSOURI.

TYPE-METAL AGITATOR.

Specicaton of Letters Patent.

Patented Dec. 2S, 1920.

Application led November 1, 1919. Serial No. 335,064.

T 0 all whom t may concern.'

Be it known that I, GEORGE L. FORT, a citizen of the United States, residin at Des Moines, in the county of Polk and tate of Iowa, have invented certain new and useful Improvements in Type-Metal Agitators; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this speciication.

This invention relates to a type-metal agitating device which may be used for mixing a metal batch so that a uniform quality of metal may be maintained. As an example of the use to which the invention may be put, attention'is directed to the fact that in newspaper and publishing offices the type-metal is cast lin stereotyped plates to be used in a. printing press sometimes for a single edition. The stereotyped plates are then remelted for subsequent use. The remelted metal must sometimes be mixed with metal which has not been cast or sometimes the batch of type-metal must be supplied with a suitable rejuvenating chemical (or in a n0- menclature of the compositor, a suitable dope is added). llVhen this is done, the so-called dope is liable to be localized in the large batch of type-metal with the result that the metal is not of uniform quality and therefore objectionable.

I have provided means whereby the metal may be caused to become agitated so that all of its component constituents will become thoroughly commingled to form a substantially homogenous mass of uniform quality.

My invention contemplates'a steam generY ator comprising a receptacle which may contain a suitable liquid, the receptacle beingV adapted to be emersed inthe melted typemetal so that the heat thereof will convert the liquid `into steam and cause it to'escape from the receptacle in the body of typemetal so as to cause an effective agitation thereof. Y

In the drawings,

Figure I is a vertical longitudinal sec tional view of a steam generator constructed in accordance with my invention.

F ig. II isla fragmentary perspective view of a type pot to which my invention has been applied, and

Fig. III is a cross sectional view on the line III--III of Fig. II.

Referring now to the drawings by numerals of reference:

1 designates a receptacle which, for convenience, may be cylindrical in form, with an inlet opening 2 at one end and an outlet opening 3 in the other. The outlet opening may be provided in a plug l which may initially be screwed into the cylinder 1 and fastened thereto by autogenous welding. The opening 3 is surrounded by a tubular member 5 having an opening 6 in the top thereof and steam outlet openings 7 in the side wall. Vithin the tube 5 is a spider 8 serving as a guide for the valve stem 9 of the needle valve 10 which is adapted to close the opening 3. through the opening 2 and projects a considerable distance beyond the receptacle 1 so that the valve wheel or handle 11 will be accessible externally from the type-metal pot 12 containing the type-metal 13.

Surrounding the opening 2 of the receptacle 1 is a threaded flange 1e which carries a sleeve 15 having a safety vent or port noz- Zle 16 in the wall thereof. The upper end of the tubular member 15 is threaded to receive a plug 17 forming part of the end wheel 18 adjacent to the handle 11. The plug 17 carries a yoke 19 which is provided with an, inwardly projecting flange 2O movable in the space 21 betweenthe flanges 22 and 23 on the tubular valve stem 24, which is sleeved upon the valve stem 9. The lower end of the valve 'stem 211. carries a valve 25 which normally closes the opening 2 which, as will be observed, is considerably largerthan the valve stem 9. The upper end of the valve Istem 211 abuts against the expansion spring The valve stem 9 extends and it is desired to introduce a liquid such as Water in the receptacle 1, the plug 17 will be unscrevved by the handle 18 so that the stem 9, the sleeve 24, the valve 25, the spring 26 and yolre 19 may all be removed from the sleeve and the receptacle 1. The liquid may then be poured into the tubular member 15v until a sutlicient amount has entered the receptacle 1 whereupon the mechanism just removed will be re-positioned, the valve 10 may then be seated to close the opening 3 by turning the valve stem 9 so that the spring 26 causes the valve 25 to close the opening 2. It it is desired to'cause agitation of the type-metal, the receptacle 1 may be introduced therein, as shown in Fig. II and it desired, held by the clamp 28. The heat of the lmetal 13 Will cause steam to be generated in receptacle 1 by turning the valve stem 9 through the medium of'its handle or Wheel 11, the' valve 10 will be unseated from the seat of exhaust opening 3 so that the steam generated in receptacle 1 may pass through the opening 7 and escape through the opening 3. The escape ot the steam into the body of the metal will cause a violent bubbling or agitation so that the contents of the pot 12 Will be thoroughly mixed. It, tor any reason, the valve 3 becomes stuck or should the typemetal clog the opening 3 so as to prevent an escape of the steam generated, the pressure would build up in the receptacle 1 enough to litt the valve against the action of spring 26 and permit the escape of the steam through the safety nozzle 16 and thereby prevent an Vexplosion due to pressure in receptacle 1. When the type-metal 13 has been suiiiciently agitated, the device can be removed for subsequent use.

From the Jforegoing it Will be apparent that the device is simple in construction, that it may be readily applied in a type pot and that the amount of steam passing into the type-metal may be controlled by the handle 11 on stem 9.

Having thus described my inventiomwhat I claim as new therein, and desire to secure by Letters-Patent is:

1. In a device for agitating molten typemetal, a steam generating receptacle insertible Within the body of the metal, a pressure-valve controlling discharge port above the level of the metal, and a manually-operable valve-'controlled discharge port below the surface of the metal;

2. InV a device for agitating moltenV typemetal, a steam generating chamber insertible Within the body of metal,`a pressurevalve controlled discharge above the metal,

and means ior discharging steam below the surfacelevel of the body of metal.

3. In a device for agitating molten metal, a steam generating receptacle insertible WithinV a body of metal, a valve discharge port in the steam generating chamber, and means, eXteriorly of the steam generating chamber and normally above the level ot the body of metal, for controlling a valved discharge port.

4L. In a device for agitating molten typemetal, a steam generating receptacle comprising a chamber containing liquid, the Walls of the chamber being designed to-absorb the heat 'from the molten metal to generate the liquid and the steam, a discharge port in said chamber, a valve for controlling the effective port area thereof, and means, normally above the body of type-metal, for operating said valve.

5. In a device for agitating molten typemetal, a steam generating chamber having a discharge opening at'one end, a tubular handle connected to the other end surrounding an inlet opening in said chamber, a valve stem projecting through the tubular handle and into the chamber, a valve on the end of the stem for controlling the effective port area of the discharge opening, and a valve for closing the inlet opening in said chamber. Y

6. In a device for agitating molten typemetal, a steam generating chamber having a discharge opening at one end, a tubular handle connected to the other end surrounding an inlet opening in said chamber, a valve stem projecting through the tubular handle and into the chamber, a valve on the end of the stem `for controlling the eiiective port area of the discharge opening, and a pressure valve for closing the inlet opening in said chamber.

7. AV device Jfor generating steam to agitate molten type-metal comprising a chamber V having an inlet port at one end and an outlet port at the other end, a valve stem projecting through the Vinlet port, a valve carried by said stem for controlling the effective port area of the outlet'port, a tube surrounding the inlet port and valve stem, said tube being of appreciable length to provide a handle for the chamber, a springpressed sleeve on the valve stem, a valve carried thereby for normally closing the inlet opening, a dischargefport carriedby the sleeve, and a plugv closing the open end of the tube, the plug being connected to the sleeve and surrounding the valve stem.

In testimonv whereof I aiiiX myr signature.

GEORGE LESLI FORT.V 

